101080778 has 4 divisors (see below), whose sum is σ = 151621170. Its totient is φ = 50540388.

The previous prime is 101080751. The next prime is 101080787. The reversal of 101080778 is 877080101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 64272289 + 36808489 = 8017^2 + 6067^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25270193 + ... + 25270196.

Almost surely, 2^101080778 is an apocalyptic number.

101080778 is a deficient number, since it is larger than the sum of its proper divisors (50540392).

101080778 is an equidigital number, since it uses as much as digits as its factorization.

101080778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50540391.

The product of its (nonzero) digits is 3136, while the sum is 32.

The square root of 101080778 is about 10053.8936735973. The cubic root of 101080778 is about 465.8250708035.

The spelling of 101080778 in words is "one hundred one million, eighty thousand, seven hundred seventy-eight".